Acetylene-gas lamp.



No. 633,655. Patented Sept. 26, 1399'. 9

J. A. mosmzn.

ACETYLENE GAS- LAMP.

(Application filed Sept. 16, 1B98.|

(No Mndel.)

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NITED STATES PATENT rrrcn.

JOHN A. MOSIIER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS &

IVESTLAKE COMPANY, OF SAME PLACE.

ACETYLEN E-GAS LAM P.

SPECIFICATION forming part of Letters Patent No. 633,65 5, datedSeptember 26, 1899.

Application filed September l6 1898- Serial No. 691,091. (No model.)

To all whom it ntay concern.-

Be it known that I, JOHN A. MOSHER, a citizen of the United States ofAmerica,and a resident of Chicago, county'of Cook, and State ofIllinois,haveinvented certain new and useful ImprovementsinAcetylene-Lamps, of which the following is a specification, and whichare illustrated in the accompanying drawings, forming a part thereof.

The objects of the invention are to provide improved means for bothautomatically and manually controlling the water-supply in lamps of thisclass, for cooling the gas-discharge pipe, to improve the mechanicalconstruction of the body of the lamp, and means for sealing thegenerating-chamber.

The invention consists in the various parts and arrangement of parts,ashereinafter fully described and as illustrated in the accompanyingdrawings, in which Figure 1 is a side elevation of the lamp. Fig. 2 is atransverse vertical central section. Fig. 3 is a plan section below thehead of the lamp, some of the parts being broken away. Fig. 4 is a planView of the carbid-container, a port-ion being broken away. Fig. 5 is adetailsection through the water-feed and its controlling mechanism. Fig.6 is a detail section on the line 6 6 of Fig. 5; and Fig. 7isa detailsection of the water-tube, showing a modified form of construction.

The head of the lamp is shown at A and may be of any desired form. It ispreferably spaced apart somewhat from the body portion and securedthereto by legs a, which are as small as may be consistent with strengthin order that the least possible amount of heat may be conducted fromthe head to the body of the lamp.

The lamp-bod y is shown as being substantially cylindrical in form andas being circumferentially contracted, as shown at b, intermediate ofits ends. WVithin the upper end B of the lamp-body is permanently fixedan annular water-tank D, the top of which forms the top of the lamp-bodyand to which the legs a are attached. This water-tank is provided with afilling-aperture (Z, closed by a suitable plug. The carbid-container Eis adapted to fit within the lower end C of the lamp-body and is closedby means of a cen- "trally-perforated flanged cap 6, lined with apervious pad 6, which may be formed of blotting-paper or similarmaterial. A diaphragm F is fixed across the inner end of the lowerportion 0 of the lamp-body and is provided with a central aperture, fromwhich rises a tube f, which passes through and is of less diameter thanthe central aperture of the water-tank, this tube extending into thehead of the lamp and carrying a burner-tip f. The bottom of thelamp-body is closed by means of a flanged cap H, having an annularchannel adjacent to its flange, within which is fitted a gasket K. Thelower end of the lampbody is screw-threaded and at its extreme endinturned to form a rounded bearing for the gasket. A screw-threaded bandh is fitted within the flange of the capH and is secured thereto in anydesired manner, as shown, by having its upper edge interrolled with theedge of the flange. The band It extends not quite to the bottom of theflange of the cap, so that the gasket K may be forced under its loweredge, thereby providing means for retaining the gasket in place when thecap is removed from the lamp-body.

A tube G, open at its upper end, extends downwardly through the top 6 ofthe carbidcontainer to its bottom and is provided with a series oflateral apertures g, extending, preferably, through its entire length. Atube M leads from the tank D downwardly through the diaphragm F and isadapted to enter and reach almost, but not quite, to the bottom of thecontainer. The bore of this tube is sufficiently large, so that gas mayescape upwardly through it without entirely displacing the Water, and tofacilitate this action the tube is unobstructed otherwise than by amanuallyoperated valve, which may or m ay not be used, except at itslower end, where its here is reduced either by actually contracting thetube or by filling its end with a porous plug. I prefer the porous plug,as it is desirable to discharge the water from the tube into thegenerating-chamber through a retarding medium, and if the porous plug isnot used .I place a floss O, of fibrous material, at the bottom of thetube G and rest the mouth of the tube M upon it.

In Figs. 2 and the tube M is shown as having its bore contracted at itslower end by the introduction of a metal plug m, having a smallaperture. This plug is counterbored from below, so as to form a smallchamber below its aperture. This arrangement exposes to the descendingwater a considerable area of the upper surface or" the fibrous floss O.\Vhen the pressure in the generating-chamberbecomes sufiicienttocounterbalance the water column in the tube M, the gas collects in thesmall chamber thus formed at the lower end of the tube and stops theflow through the small aperture in the plug m. The water is not,however, driven back in the tube beyond this plug, as the small jet ofgas passing through its aperture bubbles up through the water in thetube, and as a result the water column remains of uniform height, andthe pressure at which the gas is burned is consequently uniform insteadof varying, as is the case when by reason of the small bore of the tubeor the employment of fibrous packing within it the gas drives back thewater and so reduces the pressure of the water column.

In lieu of the metal plug m and the floss O a porous plug M, preferablyof fibrous material, may be inserted in the lower end of the tube M, andthe action is substantially the same, as the gas when the pressureexceeds that of the water column drives the water back out of the porousplug, but escapes from the plug in bubbles, and hence does not shortenthe water column beyond the length of the plug. \Vhen this means ofreducing the capacity of the discharge end of the pipe M is resorted to,an ordinary two-way cock q may be used to manually control thewater-supply to the generating-chamber. hen the metal plug m isemployed, it may be counterbored from above to provide a conicalvalve-seat and a tapering valve P applied to this seat. This valve has astem 13, which is attached to a crank-pin Q, projecting eccentricallyfrom the end of a rock-shaft g, which extends through a stuffing-box R,passing through the contracted portion b of the body of the lamp andhearing at its outer end a key 0". A collar d is fitted upon the tube fand is secured to the top of the lamp-body. This collar is freelyperforated to provide for the circulation of air around the pipe f, thecontracted portion 1) of the body of the lamp also being perforated forthe same purpose.

The container E having been filled with carbid is closed and insertedwithin thelower end of the lamp-body, which is then sealed by theapplication of the cap H. The waterchamber having been filled, the valvein the tube M is opened and water enters the tube G, rising to thelowest lateral aperture g, from which it escapes into the carbid,thereby starting the generation of gas. The gas finds its exit throughthe tubefand the burnertip, and when the generation is excessive thepressure forces the water down in the tube G and up through the tube M,and if the pressure is sufficient to entirely empty the tube G of waterthe gas escapes upwardly into and through the water-chamber and avent-pipe S, rising therefrom to the top of the head of the lamp. As thecarbid in the lower portion of the container becomes spent the waterrises in the tube G and escapes from the higher lateral apertures.

By the construction described I am able to maintain a column of water ofsubstantially uniform height, thereby securing a uniform pressure ofgas, the tube M being at all times filled with water and theheight ofthe column being varied only by the lowering of the water-level withinthe chamber D. By locating the valve at the bottom of the water-pipeinstead of at its upper end, as has been customary in lamps of thistype, the quantity of water accessible to tire carbid after the valvehas been closed may be greatly reduced. By separating the water-tankfrom the generating-chamber by the contraction of the lampbody andproviding for the free circulation of air under and through thewater-tank and around the gas-pipe I preventin great measure the heatingof the waterdue to thechemical action in the generating-chamber and coolthe gas before it reaches the burner-tip,

- so as to check the tendency to gum up the tip.

lVhen the form of construction shown in Figs. and 5 is followed, avalve-stem 1) is made of such length that the valve is closed by lessthan a half-turn of the spindle q, so that the wear of the valve and itsseat may be compensated for by a little longer throw of the valve.

The location of the water-feed is immaterial. I show it for convenienceas being near the side of the lamp. In practice it will be founddesirable for some reasons to locate it on the axis of the lamp-body.

I claim as my invention 1. In an acetylene-lamp, the combination with aflame-chamber, a generating-chamber, a gas-tube joining the twochambers, and a vertical tube, G, in the generating-chamber and havinglateral openings; of a tank above the generating-chamber, an unpackedtube, M, leading from the tank into and substan tially to the bottom ofthe tube, G, the tube M having its discharge end directed downwardly,and a porous plug applied to such end.

2. In'an acetylene-lamp, the combination with a flame-chamber, agenerating-chamber, a gas-tube joining the two chambers, and a verticaltube, G, in the generating-chamber and having lateral openings; of atank above the generating-chamber, a tube, M, leading from the tank intoand substantially to the bottom of the tube G, and a porous plug withinthe discharge end of the tube M, the bore of such tube beingunobstructed above the plug. 3. In an acetylene-lamp, the combinationwith a flame-chamber, a generating-ch amber, a gas-tube joining the twochambers, and a vertical tube, G, in the generating-chamber andhavinglateral openings; of a tank above the generatingchamber, anunpacked tube, M, leading from the tank into and substantially to thebottom of the tank G, and having its discharge end'directed downwardly,the bore of the tube M being contracted adjacent to but above itsdischarge end; and a mass of fibrous material against which the open endof the tube bears.

4. In an acetylene-generator, the combination with a generatingchamberand a tank located over and spaced apart from the chamber, of a tubeleading from the tank through the top of the chamber, a rock-shaftentering the tube laterally between the chamber and tank and carrying acrank-pin at its inner end, and a valve located at the lower end of thetube and having its stem connected with the crank-pin.

5. In an acetylene-lamp, the combination with a cylindrical body havingits end screwthreaded, a flanged cap for closing such end, and athreaded band fitted within and se cured to the flange, the inner edgeof the band being spaced apart from the cap-body, whereby a gasket maybe secured Within the cap.

6. In an acetylene-lamp, the combination with an annular water-chamber,of a generating-chamber below the water-chamber, and a gaspipe leadingthrough the central apertu re of the water-chamber, such aperture beingopen to the atmosphere at its lower end.

7. In an acetylene-lamp, the combination with a cylindrical body, of anannular waterchamber in the upper end of the cylinder, ageneratingchamber in the lower end of the cylinder and spaced apart fromthe waterchamber, and a gas-pipe leading from the generating-chamberthrough the central aperture of the water-chamber, the wall of thecylinder being perforated between the two chambers.

8. In an acetylene-lamp, the combination with a water-chamber, and ageneratingchamber below the water-chamber, of a laterally-aperturedvertical tube within the generating-chamber, a mass of fibrous materialwithin and at the bottom of such tube, awater-tube leading from thewater-chamber to the generating-chamber, and being located within thelaterally-apertured tube, and'having its lower end in contact with thefibrous material, and an apertured block set in the lower end of thewater-tube and being counterbored from below.

9. In an acetylene-lamp, the combination with the generating-chamber anda burner, of a gas-tube leading from the generatingchamber to theburner, and a sleeve loosely inclosing the tube and being open at bothends, one end of the sleeve being so located with reference to theburner that the draft of the lamp causes a circulation of air throughthe sleeve.

10. In an acetylene-lamp, the combination with an annular water-chamber,of a generating-chamber, below the water-chamber, a gas-pipe leadingthrough the aperture of the water-camber, such aperture being open tothe atmosphere at its lower end, and aburner located immediately abovesuch aperture.

11. In an acetylene-lamp, the combination with an annular water-chamber,of a generating-chamber below the water-chamber, a delivery gas-pipeleading through the aperture of the water-chamber and spaced apart fromits walls, and a burner located immediately above such aperture.

JOHN A. MOSI-IER.

\Vitnesses:

LoUIs K. GILLsoN,

HESTER 13. BAIRD.

